Photographic plate and film bath-tank.



PATEN'IED JAN. 20', 1903.

S. A. BOUGHER.

2 SHBETS-SHEET 1 PHOTOGRAPH'IO PLATE AND FILM BATH TANK. APPLICATION FILED AUG. 12, 1902.

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PATENTED JAN. 20, 1903.

S. A. BOUGHER.

PHOTOGRAPHIC PLATE AND FILM BATH TANK.

APPLICATION FILED AUG. 12, 1902.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

SAMUEL A. BOUCI-IER, OF BARTON, MARYLAND.

PHOTOGRAPHIC PLATE AND FILM BATH-TANK.

SPECIFICATION forming part of Letters Patent No. 718,904, dated January 20, 1903.

pplication filed August 12,1902. Serial No. 119,368. (No model.)

To all whont it natty concern:

Be it known that I, SAMUEL A. BOUCHER, a citizen of the United States of America, residing at Barton, in the county of Allegany and State of Maryland, have invented certain new and useful Improvements in Photographic Plate and Film Bath-Tanks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in photographic plate and film bath-tanks, and has for its primary object to provide means for lowering and raising a number of plates simultaneously into the developer or wash; furthermore, to provide means whereby the plates are prevented from tilting as they are raised or lowered within the tank.

Broadly, the invention comprises a tank within which is slidably arranged an open frame which is connected by suitable means to the crank-shaft journaled in the shaft.

With the above and other objects in View the invention consists in the novel construction, combination, and arrangement of parts, as will appear in the following description and claims.

In describing the invention in detail referonce is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the several views,in which- Figure l is a View in perspective of the present invention. Fig. 2 is a central vertical sectional View thereof. Fig. 3 is a transverse vertical sectional view thereof. Fig. 4 is a perspective View of the frame removed from the tank.

In the drawings the reference-numeral 1 indicates a suitable tank shown in the drawings approximately rectangular and provided adjacent to its lower edge with an outlet 2, which outlet is provided with a rubber tube or other flexible connection 3. Journaled in brackets 4, secured to the upper edge of one of the sides of the tank 1, is a shaft 5, provided at one of its ends with a crank-arm 6.

7 indicates a pair of rock-arms rigidly secured to the shaft and extending inwardly into the tank, terminating in booked ends 7, connected to links 8.

9 indicates a rectangular frame which is slidably arranged within the tank and is provided at its opposite ends with upwardly-extending arms 10, pivoted at 11, and to the upper ends of which are formed the links 8. This frame 9 is preferably formed so as to permit the liquid to circulate freely therethrough. Mounted in the guides 12, secured to the opposite ends of the tank, are the corrugated plates 14, which plates are. adapted to receive the ends of the photographic plates and retain the same in verticalposition.

In dotted lines in Fig. 3 of the drawings it will be observed that the frame 9 is held a slight distance from the bottom of the tank in order that the developer or wash, as the case may be may pass under the frame. In order to hold. the frame in this position, I rigidly attach to the outer side of the tank a stop 15, which stop is brought into engagement with the crank-arm of the rock-arm shaft. Guides 16 are rigidly secured to the opposite inner walls of the tank 1, which guides are adapted to receive the upwardlyextending ends, to which the arms 10 are secured.

The operation of my improved device is as follows: The frame 9 is elevated through the movement of the crank-shaft and the photographic plates are placed thereon, care being taken that the ends thereof are received within the grooves or guides of the plates 14, and the frame then lowered into the tank, after which the stop 15 is brought into engagement with the crank-arm of the shaft.

It will be obvious that various changes may be made in the details of construction with out departing from the general spirit of my invention.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a tank, of a frame slidably mounted therein, a shaft journaled in brackets secured to the said tank, rockarms secured in said shaft, said rock-arms having their outer ends in engagement with said frame, and means for holding the said frame in a predetermined position, substantially as described.

2. In combination with a tank having outlets, a frame arranged in the said tank, a shaft journaled in brackets secured to one of the sides of said tank, rock-arms secured to ing arms connected to said arms and to said the said shaft, arms secured to the opposite frame, and means whereby said shaft is opends of said frame, links connected to the erated and retained in position, substantially said rock-arms, frame-arms, and a stop seas described. [5 5 cured t0 the said casing and adapted to en- In testimony whereof I affiX my signature gage said shaft, substantially as described. in the presence of two Witnesses.

3. In a device of the character described, 1 a the combination of a tank, a frame slidably bAMUEL BOULHER' mounted therein, bearings secured to said Witnesses:

N. B. MoOANDLIsH, H. G. WOOLF.

1o tank, a shaft journaled in said bearings, rockarms secured in said shaft, upwardly-extend- 

